Henry Fuchs Jack Goldfeather Jeff P. Hultquist Susan Spach John D. Austin Frederick P. Brooks Jr. John G. Eyles John Poulton Fast Spheres, Shadows, Textures, Transparencies, and Image Enhancements in Pixel-Planes. 169-187 1985 conf/egt/1985 Advances in Computer Graphics db/conf/egt/egt1985.html#FuchsGHSABEP85